Since Ubuntu is a Linux operating system, you can bypass the graphical user interface entirely and open your PDF files from the command line.

Jack Wallen shows you how to locate files on the Linux directory hierarchy using the find command.

Want to know the tricks of replacing a variable in a file using the SED command? This article will give you an overview of replacing a variable value in a file using SED. Before replacing a variable ...

The cut command offers many ways to extract portions of each line from a text file. It's similar to awk in some ways, but it has its own advantages and quirks.

In the world of Unix-based operating systems like Linux, file packaging and compression utilities play a pivotal role. One such utility is the zip command, an effective tool for compressing files to ...

Jack Wallen continues his Linux 101 series, with an introduction on how to copy files and directories from the command line.

The Linux comm command makes it easy to compare a couple text files and determine if they both contain the same lines -- whether the file contents are sorted or not.